32172

Appears in sequences

• Numbers k such that (k / product of digits of k) is 1 or a prime.at n=43A001103
• Expansion of sum ( q^n / product( 1-q^k, k=1..3*n), n=0..inf ).at n=34A035295
• Numbers k such that sigma(sigma(sigma(k))) == 6*sigma(k).at n=29A067065
• Number of doubletons in all partitions of n. By a doubleton in a partition we mean an occurrence of a part exactly twice (the partition [4,(3,3),2,2,2,(1,1)] has two doubletons, shown between parentheses).at n=40A116646
• Smallest number k such that k*(2^(2*A000043(n))-1)+1 is prime.at n=28A268175
• a(n) = (15*n^2 + 35*n + 16)*Pochhammer(n, 5) / 6!.at n=6A293610
• Triangle read by rows: T(n,k) is the number of 2k-cycles in the n X n grid graph (2 <= k <= floor(n^2/2), n >= 2).at n=29A302337
• a(n) = 27*n^2/2 + 45*n/2 - 12 (n>=1).at n=47A304375